A supplier to the country’s largest food service provider, Sysco, is recalling more than 3 tons of ready-to-eat Philly Beef Steak products due to possible listeria contamination, the U.S. Department of Agriculture’s Food Safety and Inspection Service announced Monday.

CTI Foods LLC, of Owingsville, Ky., is recalling approximately 6,720 pounds of the sliced beef products produced on Aug. 9.

These items were shipped to a food service warehouse in Hamilton, Ohio, and were further distributed to food service locations, according to a recall notice from the USDA’s Food Safety and Inspection Service.

All of the recalled Philly Beef Steak product has “EST. 19085” printed inside the USDA mark of inspection on the label. Additional identifying information for the recalled product includes: “Classic Sysco” in 10-pound cases that contain four 2.5-pound bags. The boxes and the bags inside them are labeled “FULLY COOKED PHILLY BEEF STEAK SLICED Caramel Color Added” and have a package code of 4887097.

“Consumption of food contaminated withL. monocytogenes can cause listeriosis, a serious infection that primarily affects older adults, persons with weakened immune systems, and pregnant women and their newborns. Less commonly, persons outside these risk groups are affected,” according to the recall notice.

Specific laboratory tests are required to identify infections from listeria. Anyone who becomes ill after eating or handling the recalled product should tell their doctor about the possible exposure to the bacteria.

In pregnant women, the infection can cause miscarriages, stillbirths, premature delivery or life-threatening infection of the newborn. In addition, serious and sometimes fatal infections in older adults and persons with weakened immune systems.